Warnings before patch:
files: ['drivers/gpu/drm/bridge/synopsys/dw-hdmi.c', 'drivers/gpu/drm/drm_sysfs.c', 'drivers/gpu/drm/i915/gvt/scheduler.c', 'drivers/gpu/drm/radeon/radeon_test.c', 'drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c']
Warning: drivers/gpu/drm/drm_sysfs.c:601 No description found for return value of 'drm_class_device_register'
Warning: drivers/gpu/drm/i915/gvt/scheduler.c:494 No description found for return value of 'intel_gvt_scan_and_shadow_workload'
Warning: drivers/gpu/drm/drm_sysfs.c:601 No description found for return value of 'drm_class_device_register'
Warning: drivers/gpu/drm/i915/gvt/scheduler.c:494 No description found for return value of 'intel_gvt_scan_and_shadow_workload'

Current warnings:
files: ['drivers/gpu/drm/bridge/synopsys/dw-hdmi.c', 'drivers/gpu/drm/drm_sysfs.c', 'drivers/gpu/drm/i915/gvt/scheduler.c', 'drivers/gpu/drm/radeon/radeon_test.c', 'drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c']
Warning: drivers/gpu/drm/drm_sysfs.c:601 No description found for return value of 'drm_class_device_register'
Warning: drivers/gpu/drm/i915/gvt/scheduler.c:494 No description found for return value of 'intel_gvt_scan_and_shadow_workload'
Warning: drivers/gpu/drm/drm_sysfs.c:601 No description found for return value of 'drm_class_device_register'
Warning: drivers/gpu/drm/i915/gvt/scheduler.c:494 No description found for return value of 'intel_gvt_scan_and_shadow_workload'

Warnings before: 4 after: 4